A,Product features
1, PBT, shell, high temperature resistance, corrosion resistance;
2, epoxy potting, isolation performance is good, strong impact resistance;
3, small volume, beautiful appearance, pin type direct welding circuit board;
4, wide linear range and good consistency.
Second,Model definition
Such as:CT01-5/2.5W
Third, performance indicators
Type no. | I/O | nonlinearity | Phase shift RL= 0 （After the compensation） | Linear range | Load resistance | ||
CT01-5/2.5W | 5A/2.5mA | < 0.1% | < 5' | 0A～20A | Or less800Ω | ||
CT01-5/2W | 5A/2mA | < 0.1% | < 5' | 0A～20A | 1000 or lessΩ | ||
CT01-5/5W | 5A/5mA | < 0.1% | < 5' | 0A～10A | 300 or lessΩ | ||
CT02-5/2.5W | 5A/2.5mA | < 0.1% | < 5' | 0A～20A | Or less800Ω | ||
CT02-5/2W | 5A/2mA | < 0.1% | < 5' | 0A～20A | 1000 or lessΩ | ||
CT02-5/5W | 5A/5mA | < 0.1% | < 5' | 0A～10A | 300 or lessΩ | ||
CT03-5/2.5 | 5A/2.5mA | < 0.1% | < 5' | 0A～20A | Or less800Ω | ||
CT03-5/2 | 5A/2mA | < 0.1% | < 5' | 0A～20A | 1000 or lessΩ | ||
CT03-5/5 | 5A/5mA | < 0.1% | < 5' | 0A～10A | 300 or lessΩ | ||
CT04-5/2.5 | 5A/2.5mA | < 0.1% | < 5' | 0A～15A | 5 or less00Ω | ||
CT04-5/2 | 5A/2mA | < 0.1% | < 5' | 0A～15A | 800 or lessΩ | ||
CT04-5/5 | 5A/5mA | ＜0.1% | < 5' | 0A～10A | 100 or lessΩ | ||
CT06-30/5 | 30A/5mA | < 0.1% | < 5' | 0A～50A | 200 or lessΩ | ||
CT07-5/2.5W | 5A/2.5mA | < 0.1% | < 5' | 0A～15A | 5 or less00Ω | ||
CT07-5/2W | 5A/2mA | < 0.1% | < 5' | 0A～15A | 800 or lessΩ | ||
CT07-5/5W | 5A/5mA | < 0.1% | < 5' | 0A～10A | 100 or lessΩ | ||
Isolation of pressure | The use of temperature | Storage temperature | Relative humidity | ||||
＞2500Vac | - 50℃~ 85℃ | - 60℃~ 95℃ | < 95% | ||||
Chart as a commonly used specifications, which could also separately designed according to customer's requirements.
Four, shape and pin drawing(unit:mm） 
Five, the method of use
Using the method one:
The above model precision current transformer, except CT06-30/5 rated input current is 5 a, rated output current of 2.5 mA / 2 mA / 5 mA.When users need to output current signal into voltage signal, it is recommended to use circuit is shown in figure 1.Adjust the value of the feedback resistance R and R in figure 1 to obtain the output voltage of the necessary.Capacitor C1 and adjustable resistance r 'is used to compensate the phase shift.Capacitance C2 and C3 is 400 to 1000 pf small capacitance, used for decoupling and filtering.Two reverse connect protection diode is the role of operational amplifier.Operational amplifier as requiring the use of precision, it is recommended to use OP07 series, using performance better operational amplifier is easier to achieve high accuracy and good stability.Usually take operational amplifier power supply voltage+15 v or+12 v, can also be customised according to particular case.Figure in the feedback resistance R accuracy requirement is higher than 1%, the temperature coefficient is better than 50 PPM.Users use the recommended circuit changed slightly also can constitute A single power supply mode, suitable for single polarity input of A/D converter.
Use method 2:
Secondary as without operational amplifier and a resistor in parallel to the output directly also can transform into a voltage signal, using the circuit shown in figure 2.Premise is resistance less than 800 Ω, maximum 2 v, output voltage when still can get nonlinearity is better than 0.1% of the output voltage signal.Compared with 1 recommended circuit, its influence is as follows: 1. The narrow dynamic range of the transformer, (2) make phase shift increases, resistance accuracy requirement is higher than 1%, the temperature coefficient is better than 50 PPM.
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